Hi all
I've been away all summer for other things. Now I'm into electronics again.
I have started to use LtSpice more and more. I have used NI Multisim 10 before but sometimes it does weard things. Also, LtSpice is the tool for DIY guys to change circuits between each other, particularly in this forum I have seen.

Hi
Please change the directive for the op amp to .lib idealOPamp.lib in the Luxman105u.asc schemativ file or use this new zip instead.

Open the Luxman105u.asc with Ltspice and run the simulation. Then point with the cursor on the labels in and out. (A "pencil" will show up). Then the graph should show the frequency response and phase for input and output.

Hope this will help. I'm very new to this. All of you "LtSpice people" will not have any problem though.